Any wire you find is going to be 10 times better than the wire in the car. The quality of the new wire is not the issue - the issue is that the entire harness is degraded. You have to rebuild the whole thing to have anything. I have tried a partial rebuild in the high heat areas - but it lasted for only about a month and then failed again. I concluded it was a hopeless proprosition - and bought a new harness. Of course the harness price at the time was less than half what it is now. I think the current price is about three times what it was 5 years ago - which is what's really obscene about the wiring harness issue. Obviously with enough of an investement in time you could do the whole harness. In my experience doing less than the whole thing was a waste of time.